anotherSharing a book across devices
another.money can keep one book in sync across several devices — your phone and laptop, or two people sharing a household budget — while staying end-to-end encrypted. The sync relay only ever stores ciphertext; it can't read your accounts, amounts, or names.
Collaboration is an optional, premium feature. A single local book never needs it and never talks to a server.
How it works
- Invite. On the device that owns the book, open Set up collaboration and create an invite. You get a link/QR code to share with the other device. The book password is shared separately — it's never in the link.
- Join. The other device opens the invite, enters the shared password, and requests to join.
- Approve. The owner approves the request with one tap. You don't have to be on the invite screen at the moment they join — the next time you open the app you'll be prompted to approve any waiting requests.
- Sync. From then on, both devices sync automatically: changes flow through the relay, encrypted, and merge on each device.
Offline-friendly
Every device works fully offline and merges cleanly when it reconnects — edits made on different devices combine without clobbering each other, and deletes are respected. You can keep using the app on a plane and it'll catch up later.
Good to know
- Same password. All devices on a shared book use the same book password — it's what derives the encryption keys.
- Removing a device. The owner can revoke a device; it loses access on its next sync.
- It's still your data. Even while shared, the book stays a local encrypted file on each device. Turning sync off leaves each device with its own copy.